Channel Surfer: Wednesday's TV (with VIDEO)

Valerie Rockey, from left, Ricky Ubeda, Zack Everhart Jr. and Jessica Richens compete for the last time on the performance finale of FOX's "So You Think You Can Dance."

In today's TV Picks, several shows wrap their seasons, the "SYTYCD" dancers give their all in their last competition performances, Minnie Driver uncovers some deep family secrets and much more.

Let's go to the bullets:

"So You Think You Can Dance" (7 p.m. on FOX, cable channel 13): The Top 4 dancers -- Zack Everhart Jr., Jessica Richens, Valerie Rockey and Ricky Ubeda -- perform for votes for the last time, pairing with one another and with All-Stars. Jesse Tyler Ferguson guest judges, and Jason Mraz will perform "Love Someone."

"Young & Hungry" (7 p.m. on ABC Family, cable channel 28): Josh and Caroline's (Jonathan Sadowski and Mallory Jansen) wedding date gets moved up and, in the process, Caroline forgets his birthday. Gabi (Emily Osment) volunteers to let Caroline give Josh the present she bought him, then regrets it when she sees Josh's reaction in the season finale.

"Mystery Girls" (7:30 p.m. on ABC Family): Charlie, Holly and Nick (Jennie Garth, Tori Spelling and Miguel Pinzon) find themselves in danger when the first murderer they caught is back and stalking them.

"America's Got Talent" (8 p.m. on NBC): Six more acts advance in a live results show.

"Legends" (8 p.m. on TNT, cable channel 42): Martin (Sean Bean) poses as an arms dealer to track down some deadly gas, then finds himself in the arms of a beautiful rival (Necar Zadegan).

"Extant" (8 and 9 p.m. on CBS): Back-to-back episodes find Molly (Halle Berry) turning to an unlikely ally to find her baby and Sparks (Michael O'Neill) determined to keep it alive to take advantage of its mysterious properties.

"Who Do You Think You Are?" (8 p.m. on TLC, cable channel 50): Minnie Driver learns more about her late father than she might have bargained for, uncovering secrets and a long-lost relative.

"Hot in Cleveland" (9 p.m. on TV Land, cable channel 45): The series' 100th episode finds Victoria (Wendie Malick) up for an Oscar and Elka (Betty White) waiting for election results for her City Council race.

"Graceland" (9 p.m. on USA, cable channel 25): Briggs (Daniel Sunjata) tries to track down someone who may know about his past crimes, while the rest of the team pulls off a bank heist.

"Motive" (9 p.m. on ABC, cable channel 8): The second-season finale finds Cross and Flynn (Warren Christie and Kristin Lehman) investigating the death of Cross's girlfriend (Laura Mennell) in a case that has ties to a 10-year-old murder.

"Taxi Brooklyn" (9 p.m. on NBC): Cat (Chyler Leigh) brings in a gang leader (Marco Palma), but when a blackout strikes the precinct, the criminal gets his hands on a gun and kills some cops. Worse, someone at the station provided the weapon and the rest of the gang arrives to cause trouble.